PPT Slide
Calculate the total three-phase power supplied to the load.
|Vph| = |Vln| = |Vll| /Ö3= 220 V. / Ö3 » 127 V.
Z = 10 + j0 W = 10/ 0° W \ q = 0° so that …
|Il| = |Iph| = |Vln|/|Z| » 127 V./ 10 W » 12.7 A. so that ...
S3ph = Ö3|Vll||Il|(cosq + jsinq) = Ö3 ´ 220 V. ´ 12.7 A. ´ (1 + j0)
S3ph » 4.84 KW + j0 KVAR \ P3ph » 4.84 KW (answer)
Section 11.3: Power in Three-Phase Systems cont.
Example 11.3 (pp. 463-464)